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Kollmorgen AKM74L-ANC2DB0
Product Name: AKM7 Family High-Torque Brushless AC Servo Motor, Frame 188 mm, Stack 4, Winding L, EnDat Abs Encoder, 24 V Brake
Product Introduction:
Large AKM7 motor for heavy-axis machinery. 53 Nm stall torque, 640 VDC bus capability, single-turn absolute encoder, integrated 24 VDC fail-safe brake, rotatable M23 connectors.
Detailed content
Technical Specifications:
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Frame Size: AKM7 (188 × 188 mm flange)
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Stack Length: 4
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Winding Type: L
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Max DC Bus: 640 VDC
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Rated Power: 6.08 kW (8.16 HP) @ 640 VDC bus
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Rated Torque: 41.5 Nm
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Stall Torque: 53 Nm
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Peak Torque: 143 Nm
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Rated Speed: 1400 rpm @ 640 VDC / 1200 rpm @ 560 VDC
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Rated Current: 12.9 A RMS
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Rotor Inertia: ~120 kg·cm²
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Feedback: EnDat 2.2 absolute optical encoder (AD58-type, 27-bit class)
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Brake: 24 VDC spring-applied fail-safe holding brake
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Shaft: 80 mm smooth (variant dependent; -2D code indicates smooth shaft + brake)
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Connectors: 2 × angled rotatable M23 SpeedTec
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Protection: IP65
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Thermistor: PTC
Functional Features:
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High torque density, low harmonic stator design
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Absolute feedback for power-loss homing avoidance
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Brake released only with 24 VDC applied and drive enabled
Installation Requirements:
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Requires lift/machine-rated handling (>40 kg typical)
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Rigid coupling mandatory; no belt preload on shaft
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Brake supply fused separately, not via drive 24 V logic
Use Notes:
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Do not engage brake while rotating
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Encoder battery/EnDat cabling must be uninterrupted
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Pair with AKD-01207 or larger, or S610/S614 for full torque
